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NPK International Inc.

NPKI Clue Score64
United States Fiscal year ends December CIK 0000071829
$11.34 -1.22% Close, 9 Oct 2026

Price, with every insider trade on it

Closing prices, 12 months · point at a dot for who traded, or at the line for the close
11.34 on 9 Oct 2026
16 14 11 Oct 2025 Apr 2026 Oct 2026 13 Oct 2025 $11.06 14 Oct 2025 $11.13 15 Oct 2025 $11.59 16 Oct 2025 $11.51 17 Oct 2025 $11.68 20 Oct 2025 $12.10 21 Oct 2025 $12.26 22 Oct 2025 $12.32 23 Oct 2025 $12.78 24 Oct 2025 $12.95 27 Oct 2025 $12.92 28 Oct 2025 $13.14 29 Oct 2025 $13.66 30 Oct 2025 $13.44 31 Oct 2025 $12.30 3 Nov 2025 $12.74 4 Nov 2025 $12.52 5 Nov 2025 $12.97 6 Nov 2025 $12.70 7 Nov 2025 $12.42 10 Nov 2025 $12.47 11 Nov 2025 $12.68 12 Nov 2025 $12.71 13 Nov 2025 $12.02 14 Nov 2025 $11.95 17 Nov 2025 $11.66 18 Nov 2025 $11.83 19 Nov 2025 $11.55 20 Nov 2025 $11.21 21 Nov 2025 $11.52 24 Nov 2025 $11.95 25 Nov 2025 $12.19 26 Nov 2025 $12.15 28 Nov 2025 $12.31 1 Dec 2025 $12.54 2 Dec 2025 $12.42 3 Dec 2025 $12.50 4 Dec 2025 $12.94 5 Dec 2025 $12.80 8 Dec 2025 $12.72 9 Dec 2025 $12.94 10 Dec 2025 $12.98 11 Dec 2025 $13.10 12 Dec 2025 $12.91 15 Dec 2025 $12.86 16 Dec 2025 $12.65 17 Dec 2025 $12.34 18 Dec 2025 $12.33 19 Dec 2025 $12.24 22 Dec 2025 $12.33 23 Dec 2025 $12.22 24 Dec 2025 $12.20 26 Dec 2025 $12.12 29 Dec 2025 $12.10 30 Dec 2025 $12.12 31 Dec 2025 $11.92 2 Jan 2026 $12.10 5 Jan 2026 $12.59 6 Jan 2026 $12.45 7 Jan 2026 $12.10 8 Jan 2026 $12.51 9 Jan 2026 $12.42 12 Jan 2026 $12.91 13 Jan 2026 $13.66 14 Jan 2026 $13.61 15 Jan 2026 $13.78 16 Jan 2026 $13.93 20 Jan 2026 $13.42 21 Jan 2026 $13.97 22 Jan 2026 $14.18 23 Jan 2026 $13.72 26 Jan 2026 $13.65 27 Jan 2026 $13.86 28 Jan 2026 $13.60 29 Jan 2026 $13.83 30 Jan 2026 $13.81 2 Feb 2026 $14.03 3 Feb 2026 $14.35 4 Feb 2026 $13.79 5 Feb 2026 $13.69 6 Feb 2026 $14.11 9 Feb 2026 $14.23 10 Feb 2026 $14.23 11 Feb 2026 $14.63 12 Feb 2026 $13.95 13 Feb 2026 $14.44 17 Feb 2026 $14.52 18 Feb 2026 $14.58 19 Feb 2026 $14.62 20 Feb 2026 $14.58 23 Feb 2026 $14.39 24 Feb 2026 $14.47 25 Feb 2026 $14.30 26 Feb 2026 $14.89 27 Feb 2026 $14.43 2 Mar 2026 $14.07 3 Mar 2026 $13.69 4 Mar 2026 $14.07 5 Mar 2026 $13.82 6 Mar 2026 $13.56 9 Mar 2026 $13.88 10 Mar 2026 $13.93 11 Mar 2026 $13.64 12 Mar 2026 $13.18 13 Mar 2026 $13.36 16 Mar 2026 $13.72 17 Mar 2026 $13.89 18 Mar 2026 $13.88 19 Mar 2026 $14.06 20 Mar 2026 $13.56 23 Mar 2026 $14.23 24 Mar 2026 $14.88 25 Mar 2026 $14.93 26 Mar 2026 $14.42 27 Mar 2026 $14.61 30 Mar 2026 $14.23 31 Mar 2026 $14.49 1 Apr 2026 $14.36 2 Apr 2026 $14.42 6 Apr 2026 $14.41 7 Apr 2026 $14.33 8 Apr 2026 $14.86 9 Apr 2026 $15.03 10 Apr 2026 $15.03 13 Apr 2026 $15.02 14 Apr 2026 $15.00 15 Apr 2026 $15.16 16 Apr 2026 $14.37 17 Apr 2026 $14.70 20 Apr 2026 $14.32 21 Apr 2026 $14.30 22 Apr 2026 $14.51 23 Apr 2026 $14.71 24 Apr 2026 $15.10 27 Apr 2026 $16.07 28 Apr 2026 $15.76 29 Apr 2026 $15.65 30 Apr 2026 $16.35 1 May 2026 $15.57 4 May 2026 $14.93 5 May 2026 $15.78 6 May 2026 $15.71 7 May 2026 $15.43 8 May 2026 $14.95 11 May 2026 $15.29 12 May 2026 $15.10 13 May 2026 $15.60 14 May 2026 $15.71 15 May 2026 $15.29 18 May 2026 $15.11 19 May 2026 $15.29 20 May 2026 $15.52 21 May 2026 $15.27 22 May 2026 $15.52 26 May 2026 $15.95 27 May 2026 $15.20 28 May 2026 $15.07 29 May 2026 $14.52 1 Jun 2026 $14.31 2 Jun 2026 $14.59 3 Jun 2026 $14.46 4 Jun 2026 $14.62 5 Jun 2026 $14.28 8 Jun 2026 $14.88 9 Jun 2026 $14.80 10 Jun 2026 $14.60 11 Jun 2026 $14.65 12 Jun 2026 $14.98 15 Jun 2026 $14.77 16 Jun 2026 $14.79 17 Jun 2026 $15.11 18 Jun 2026 $15.90 22 Jun 2026 $15.32 23 Jun 2026 $15.43 24 Jun 2026 $14.76 25 Jun 2026 $15.52 26 Jun 2026 $15.61 29 Jun 2026 $15.87 30 Jun 2026 $15.91 1 Jul 2026 $14.30 2 Jul 2026 $14.31 6 Jul 2026 $14.14 7 Jul 2026 $13.72 8 Jul 2026 $14.25 9 Jul 2026 $14.43 10 Jul 2026 $14.35 13 Jul 2026 $14.33 14 Jul 2026 $14.51 15 Jul 2026 $14.50 16 Jul 2026 $14.28 17 Jul 2026 $14.34 20 Jul 2026 $14.44 21 Jul 2026 $14.58 22 Jul 2026 $14.82 23 Jul 2026 $14.49 24 Jul 2026 $14.35 27 Jul 2026 $14.14 28 Jul 2026 $12.94 29 Jul 2026 $12.05 30 Jul 2026 $12.46 31 Jul 2026 $12.49 3 Aug 2026 $13.21 4 Aug 2026 $13.61 5 Aug 2026 $13.58 6 Aug 2026 $13.54 7 Aug 2026 $13.48 10 Aug 2026 $13.53 11 Aug 2026 $13.85 12 Aug 2026 $14.01 13 Aug 2026 $13.85 14 Aug 2026 $14.22 17 Aug 2026 $14.32 18 Aug 2026 $14.01 19 Aug 2026 $14.05 20 Aug 2026 $13.80 21 Aug 2026 $13.68 24 Aug 2026 $13.16 25 Aug 2026 $13.16 26 Aug 2026 $13.18 27 Aug 2026 $13.55 28 Aug 2026 $13.16 31 Aug 2026 $13.28 1 Sep 2026 $13.24 2 Sep 2026 $13.25 3 Sep 2026 $13.12 4 Sep 2026 $13.22 8 Sep 2026 $13.50 9 Sep 2026 $13.50 10 Sep 2026 $13.19 11 Sep 2026 $13.26 14 Sep 2026 $12.97 15 Sep 2026 $12.98 16 Sep 2026 $12.91 17 Sep 2026 $12.75 18 Sep 2026 $12.73 21 Sep 2026 $12.48 22 Sep 2026 $11.74 23 Sep 2026 $11.71 24 Sep 2026 $11.68 25 Sep 2026 $11.72 28 Sep 2026 $11.58 29 Sep 2026 $11.40 30 Sep 2026 $11.42 1 Oct 2026 $11.83 2 Oct 2026 $11.79 5 Oct 2026 $11.81 6 Oct 2026 $12.01 7 Oct 2026 $11.41 8 Oct 2026 $11.48 9 Oct 2026 $11.34 Lewis Michael A Director Sold on a plan $24.16K 24 Nov 2025 · at $12.00 · 1.5% of stake Lewis Michael A Director Sold on a plan $28.80K 23 Feb 2026 · at $14.31 · 1.5% of stake Piontek Gregg Senior Vice President and CFO Sold on a plan $1.53M 4 Mar 2026 · at $14.07 · 10.9% of stake Fruge Mary Celeste VP, General Counsel Sold on a plan $149.30K 6 Mar 2026 · at $13.34 · 4.0% of stake Fruge Mary Celeste VP, General Counsel Sold on a plan $13.56K 16 Mar 2026 · at $13.56 · 0.4% of stake Piontek Gregg Senior Vice President and CFO Sold on a plan $225.38K 25 Mar 2026 · at $15.03 · 1.7% of stake Piontek Gregg Senior Vice President and CFO Sold on a plan $507.86K 1 Apr 2026 · at $14.51 · 4.0% of stake Piontek Gregg Senior Vice President and CFO Sold on a plan $225.68K 9 Apr 2026 · at $15.05 · 1.8% of stake Lewis Michael A Director Sold on a plan $30.80K 15 May 2026 · at $15.30 · 1.5% of stake Briggs Lori VP & President, Ind. Solutions Sold on a plan $152.28K 2 Jun 2026 · at $14.58 · 3.9% of stake LANIGAN MATTHEW President & CEO Sold on a plan $2.42M 3 Jun 2026 · at $14.43 · 39.7% of stake Briggs Lori VP & President, Ind. Solutions Sold on a plan $122.79K 8 Jun 2026 · at $14.75 · 3.3% of stake Lewis Michael A Director Sold on a plan $28.71K 17 Aug 2026 · at $14.26 · 1.5% of stake ROBESON ROSE M Director Sold on a plan $134.92K 27 Aug 2026 · at $13.49 · 4.4% of stake Warren Matthew James Chief Accounting Officer Sold on a plan $40.11K 9 Sep 2026 · at $13.41 · 5.5% of stake
0 buys0 sales at will15 planned sales

Key numbers

Fiscal year 2025, ended 31 Dec 2025, as filed
Revenue
$277.04M
Net income
$38.94M
Free cash flow
$26.32M
Operating margin
16.9%
Net margin
14.1%
Return on equity
11.1%
Return on capital
9.6%
Debt to equity
0.05
Revenue growth, 1 yr
27.4%
Revenue growth, 5 yr
-10.9% a year

Revenue and profit

Fiscal years, as filed with the SEC · point at a year for the detail
Full statements →
493M -81M FY20 Fiscal year 2020 Revenue $492.63M Net income $80.70M Margin -16.4% 615M -26M FY21 Fiscal year 2021 Revenue $614.78M Net income $25.53M Margin -4.2% · growth +24.8% 193M -21M FY22 Fiscal year 2022 Revenue $192.99M Net income $20.83M Margin -10.8% · growth -68.6% 208M 15M FY23 Fiscal year 2023 Revenue $207.65M Net income $14.52M Margin 7.0% · growth +7.6% 217M -150M FY24 Fiscal year 2024 Revenue $217.49M Net income $150.26M Margin -69.1% · growth +4.7% 277M 39M FY25 Fiscal year 2025 Revenue $277.04M Net income $38.94M Margin 14.1% · growth +27.4%
RevenueNet incomeLoss

Latest insider transactions

From Form 4, most recent first
All of them →
DateInsiderTypeValueOf own stake
9 Sep 2026 Warren Matthew James
Chief Accounting Officer
Sold on a plan $40.11K 5.5%
27 Aug 2026 ROBESON ROSE M
Director
Sold on a plan $134.92K 4.4%
17 Aug 2026 Lewis Michael A
Director
Sold on a plan $28.71K 1.5%
8 Jun 2026 Briggs Lori
VP & President, Ind. Solutions
Sold on a plan $122.79K 3.3%
3 Jun 2026 LANIGAN MATTHEW
President & CEO
Sold on a plan $2.42M 39.7%
2 Jun 2026 Briggs Lori
VP & President, Ind. Solutions
Sold on a plan $152.28K 3.9%